Chrome Release Bot (LUCI) 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
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accelerators 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
accelerometer 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
accessibility 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
ambient 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
animation 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
app_list 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
app_menu 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
ash_strings_grd 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
assistant 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
bubble 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
calendar 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
capture_mode 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
child_accounts 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
clipboard 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
components 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
constants 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
controls 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
dbus 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
detachable_base 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
display 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
drag_drop 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
events 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
fast_ink 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
frame 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
frame_throttler 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
glanceables 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
high_contrast 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
highlighter 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
host 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
hud_display 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
ime 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
in_session_auth 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
keyboard 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
lock_screen_action 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
login 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
media 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
metrics 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
multi_capture 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
multi_device_setup 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
multi_user 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
perftests 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
policy 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
power 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
projector 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
public 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
quick_pair 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
resources 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
rgb_keyboard 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
rotator 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
search_box 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
services 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
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shelf 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
shortcut_viewer 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
strings 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
style 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
system 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
test 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
tooltips 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
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tray_action 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
utility 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
wallpaper 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
webui 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
wm 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
BUILD.gn 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
DEPS 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
DIR_METADATA 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
OWNERS 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
README.md 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
ash_export.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
ash_interfaces.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
ash_prefs.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
ash_strings.grd 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
autotest_private_api_utils.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
bluetooth_devices_observer.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
bluetooth_devices_observer.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
cancel_mode.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
cancel_mode.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
debug.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
debug.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
dip_unittest.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
extended_desktop_unittest.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
focus_cycler.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
focus_cycler.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
focus_cycler_unittest.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
login_status.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
multi_profile_uma.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
multi_profile_uma.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
root_window_controller.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
root_window_controller.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
root_window_controller_unittest.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
root_window_settings.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
root_window_settings.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
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screen_util.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
screen_util.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
screen_util_unittest.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
shell.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
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shell_delegate.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
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shell_observer.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
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shell_tab_handler.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
shell_test_api.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
shell_unittest.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
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shutdown_reason.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
test_media_client.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
test_media_client.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
test_shell_delegate.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
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window_tree_host_lookup.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
window_user_data.h 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu
window_user_data_unittest.cc 4762b62e7d Publish DEPS for 106.0.5249.13 1 rok temu

README.md

Ash

Ash is the «Aura Shell», the window manager and system UI for Chrome OS. Ash uses the views UI toolkit (e.g. views::View, views::Widget, etc.) backed by the aura native widget and layer implementations.

Dependencies

Ash sits below chrome in the dependency graph (i.e. it cannot depend on code in //chrome). For historical reasons, ash has multiple dependency levels:

  • General //ash code is on top (//ash/system, //ash/wm, etc.)
  • //ash/components sit below //ash, see README
  • //ash/constants sit near the bottom of the dependency graph, see README

Access to Ash internals is controlled by DEPS files. Unless explicitly allowed by DEPS, code outside Ash should depend on the interfaces in //ash/public. Check with OWNERS if you have questions.

Tests

Tests should be added to the ash_unittests target.

Tests can bring up most of the ash UI and simulate a login session by deriving from AshTestBase. This is often needed to test code that depends on ash::Shell and the controllers it owns.

Test support code (TestFooDelegate, FooControllerTestApi, etc.) lives in the same directory as the class under test (e.g. //ash/foo rather than //ash/test). Test code uses namespace ash; there is no special «test» namespace.

Prefs

Ash supports both per-user prefs and device-wide prefs. These are called «profile prefs» and «local state» to match the naming conventions in chrome. Ash also supports «signin screen» prefs, bound to a special profile that allows users to toggle features like spoken feedback at the login screen.

Pref names are in //ash/public/cpp so that code in chrome can also use the names. Prefs are registered in the classes that use them because those classes have the best knowledge of default values.

Historical notes

Ash shipped on Windows for a couple years to support Windows 8 Metro mode. Windows support was removed in 2016.

The mash (some times called mus-ash or mustash) project was an effort to move ash into its own process and the browser in its own process. Communication between the two processes was done over mojo. Windowing was done using the window-service (some times called mus), which ran with Ash. Many of the mojo interfaces have been converted to pure virtual interfaces, with the implementation in ash. The mash project was stopped around 42019.